Organopolysiloxane compositions modified with polyurethane

Details Organopolysiloxane compositions modified with polyurethane Organopolysiloxane compositions modified with polyurethane

C - Chemistry, Metallurgy

08

L

400/5333

C08L 75/04 (2006.01) C08G 18/08 (2006.01) C08G 18/61 (2006.01) C08G 77/458 (2006.01) C08L 83/04 (2006.01)

Patent

CA 1138145

Abstract of the Disclosure Polyurethane is present as a solid phase in a liquid polyorganosiloxane, preferably being formed therein by mixing a polyhydroxy-containing material with the polysiloxane followed by addition of a polyisocyanate. If the polyorganosiloxane contains hydroxyl groups it can be chemically bonded to the polyurethane. The stable compositions are suitable for preparing molding compositions that can be cured to solid plastic masses, particularly elastomers, of superior properties by adding a curing agent for the polysiloxane.

306853

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